I based my decision on the fact that the lower grill was so large and with the OEM belly pan (extends from the front bumper to just past the axles) it seems that a lot of air would be getting trapped in the engine bay. Could you possibly elaborate on why it would be better to block the top grill? Oh, and I have a picture of the grills on my profile.
Quote:
Originally Posted by TestDrive
Better to have the opening in the lower grill and close off the upper.
More air going over the relatively smooth top; less air churning under the dirty bottom.
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